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132

KANGAROOS   AND   WALLABIES

prymnus), consists of smaller animals than the Maeropodina*
which, however, resemble them in having no ha]lux, but a hair
tail. The oesophagus enters the stomach near the pyloric en<
of that organ. The caecum, though short, has lateral longitudina
bands. The liver has 110 special Spigelian lobe. The canine
are always present, being rarely so in Maeropodinae, and ar<
usually well developed.

The third sub-family, that of the HYPSIPRYMNODONTIDAE, ii
doubtfully referable to the family; it consists of but one genui
Ifypsiprymnodon, which is in many points more like a Phalange]
than a Kangaroo. It has an opposable hallux and a non-hairy
but scaly, tail. It has canines in the upper jaw,

Sub-Fam, 1. Maeropodinae.--—The genus Mc&cropus include*
not only the Kangaroos but also the Wallabies, which are realty

FIGL 66. — Red Kangaroo.    Jtfacropus rw^

indistinguishable, though they have sometimes been placed in a
separate genus Jfalmaturits. The genus thus enlarged contains
twenty-three species. It may be thus characterised : the ears
are long, the rhinarium is usually naked, but in JC gigtawteus
and others a band of hairs descends to the upper lip; a
naked band extends from the ankle to the pads on £he digits,
which is interrupted in M. ruf^ts by a baud of haizs just in. front
of the digits. The mammae are four. The tail is not bushy,